package org.csmzxy.class2333;

class ManageSystem{
    static String systemLog = "进入管理系统";
    static class DataSave{
        void printDataLog(){
            System.out.println(systemLog);
            System.out.println("输出数据日志");
        }
    }
}
public class Example20 {
    public static void main(String[] args){
        ManageSystem.DataSave dataSave = new ManageSystem.DataSave();
        dataSave.printDataLog();
    }
}
